Support plate post-combustion oscillation suppression method and device

Abstract

The invention discloses a method and device for suppressing combustion oscillation after a support plate, and the method comprises the steps: monitoring a combustion oscillation state in an engine according to collected pressure data through a pressure sensing device arranged in the engine, and when the combustion oscillation state of the engine does not meet a preset combustion stability condition, starting the engine; adjusting the heating intensity of the heat source on the basis of heat source control logic containing the incidence relation between the external heat source intensity and the combustion oscillation state obtained on the basis of an analogue simulation mode, so as to change the ignition delay time of the fuel by adjusting the heating intensity mode of the external heat source according to the heat source control logic, the combustion mode of the area behind the support plate is changed, so that the effect of self-adaptively inhibiting the combustion oscillation behind the support plate is achieved until the combustion oscillation state of the engine is weakened to meet the combustion stability condition, and the stability of the combustion operation state in the engine in a high-flow-speed environment is guaranteed; therefore, the technical problem that the running state is unstable when the internal flow speed of an existing engine is high is solved.

Description

Technical Field

[0001] The present application relates to the field of energy and power technology, and in particular to a method and device for suppressing post-combustion oscillation of a support plate. Background Art

[0002] In many applications in the field of energy and power, the combustion of fossil fuels is still the main source of power and energy for mankind. Combustion oscillation is an unstable combustion phenomenon in which a large pressure pulsation occurs in the combustion chamber or afterburner during the operation of the engine. It is more likely to occur when the flow velocity of the flow field in the engine combustion chamber is low, and it is relatively rare in high-flow engines where the flow velocity exceeds the speed of sound. However, according to actual application conditions, combustion oscillation may occur even when the flow velocity in the engine exceeds the speed of sound, and the combustion oscillation in a high-flow environment is more complicated, which also leads to the technical problem of unstable operation state at high flow velocity inside the existing engine. Summary of the invention

[0003] The present application provides a support plate post-combustion oscillation suppression method and device, which are used to solve the technical problem of unstable operation state at high flow rate inside the existing engine.

[0004] In order to solve the above technical problems, the first aspect of the present application provides a method for suppressing post-combustion oscillation of a support plate, comprising:

[0005] Based on a pressure sensor device disposed in the engine, collecting pressure data of the flow field inside the engine;

[0006] According to the pressure data, combining the rules of fluid mechanics and thermodynamics, quantifying the combustion oscillation state inside the engine;

[0007] When the combustion oscillation state of the engine does not meet the preset combustion stability conditions, based on the heat source device arranged behind the engine support plate, combined with the preset heat source intensity configuration information and the heat source control logic, the heat source device is controlled to generate heat, and the changes in the combustion oscillation state of the engine are monitored until the combustion oscillation state of the engine meets the combustion stability conditions, wherein the heat source control logic includes a correlation between the heat source intensity and the combustion oscillation state obtained based on a simulation method.

[0008] Preferably, the heat source control logic is established in the following manner:

[0009] According to the equipment structure information of the engine, the flow field data inside the engine in an unburned state is constructed by means of fluid mechanics simulation;

[0010] According to the internal flow field data, a flow field inside the engine in a combustion state is cyclically simulated, and different heat source configuration information is combined during the simulation process to apply a heat source behind the engine support plate through the heat source device to obtain multiple groups of combustion simulation results;

[0011] According to the combustion simulation result and the heat source configuration information, the correlation between the heat source intensity and the combustion oscillation state under the flow field environment is determined, so as to establish the heat source control logic according to the correlation.

[0012] Preferably, according to the equipment structure information of the engine, constructing the flow field data of the engine in the unburned state by means of fluid mechanics simulation specifically includes:

[0013] According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed by means of steady numerical simulation of fluid mechanics;

[0014] Using the steady flow field data as the initial field model, the flow field simulation data of a preset time length is calculated by an unsteady numerical simulation method of fluid mechanics;

[0015] Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as flow field data inside the engine in an unburned state.

[0016] Preferably, determining the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation result and the heat source configuration information specifically includes:

[0017] By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

[0018] Preferably, the heat source device is disposed at a position behind the support plate and close to the upper side of the support plate and a position behind the support plate and close to the lower side of the support plate.

[0019] At the same time, the second aspect of the present application also provides a support plate afterburning oscillation suppression device, comprising:

[0020] A pressure data acquisition unit, used for acquiring pressure data of the flow field inside the engine based on a pressure sensor device arranged in the engine;

[0021] A combustion oscillation quantification unit, used to quantify the combustion oscillation state inside the engine according to the pressure data in combination with fluid mechanics and thermodynamics rules;

[0022] A heat source intensity control unit is used to control the heat source device to generate heat based on the heat source device arranged behind the engine support plate, when the combustion oscillation state of the engine does not meet the preset combustion stability condition, and monitor the changes in the combustion oscillation state of the engine until the combustion oscillation state of the engine meets the combustion stability condition, wherein the heat source control logic includes a correlation between the heat source intensity and the combustion oscillation state obtained based on a simulation method.

[0023] Preferably, it also includes:

[0024] An engine flow field construction unit, used to construct flow field data inside the engine in an unburned state by means of fluid mechanics simulation according to the equipment structure information of the engine;

[0025] A combustion flow field simulation unit, for cyclically simulating the flow field inside the engine in a combustion state according to the internal flow field data, and combining different heat source configuration information during the simulation process, applying a heat source behind the engine support plate through the heat source device, so as to obtain multiple groups of combustion simulation results;

[0026] The simulation result data processing unit is used to determine the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation result and the heat source configuration information, so as to establish the heat source control logic according to the correlation.

[0027] Preferably, the engine flow field construction unit is specifically used for:

[0028] According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed by means of steady numerical simulation of fluid mechanics;

[0029] Using the steady flow field data as the initial field model, the flow field simulation data of a preset time length is calculated by an unsteady numerical simulation method of fluid mechanics;

[0030] Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as flow field data inside the engine in an unburned state.

[0031] Preferably, the simulation result data processing unit is specifically used for:

[0032] By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

[0033] Preferably, the heat source device is disposed at a position behind the support plate and close to the upper side of the support plate and a position behind the support plate and close to the lower side of the support plate.

[0034] It can be seen from the above technical solutions that this application has the following advantages:

[0035] The technical solution of the present application provides a method for suppressing combustion oscillations after a support plate. By means of a pressure sensor device arranged in the engine, the combustion oscillation state in the engine is monitored according to the collected pressure data. When the combustion oscillation state of the engine does not meet the preset combustion stability conditions, the heating intensity of the heat source is adjusted based on a heat source control logic including a correlation between the intensity of the external heat source and the combustion oscillation state obtained by simulation. By adjusting the heating intensity of the external heat source according to the heat source control logic, the ignition delay time of the fuel is changed, and the combustion mode of the area behind the support plate is changed, thereby achieving the effect of adaptively suppressing combustion oscillations after the support plate. Then, by monitoring the changes in the combustion oscillation state of the engine after the external heat source adjustment, until the combustion oscillation state of the engine is weakened to meet the combustion stability conditions, the stability of the combustion operation state inside the engine in a high flow rate environment is ensured, thereby solving the technical problem of unstable operation state at high flow rates inside the existing engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 A schematic flow chart of an embodiment of a support plate post-combustion oscillation suppression method provided in the present application.

[0038] Figure 2 A flow chart of a heat source control logic construction process in an embodiment of a combustion oscillation suppression method is provided for the present application.

[0039] Figure 3 A schematic diagram of the positional relationship among a support plate, a fuel injection port, a heat source and a sampling point in a support plate post-combustion oscillation suppression method provided in the present application.

[0040] Figure 4 A schematic structural diagram of an embodiment of a support plate post-combustion oscillation suppression device provided in the present application. DETAILED DESCRIPTION

[0041] The embodiments of the present application provide a method and device for suppressing post-combustion oscillations of a support plate, which are used to solve the technical problem of unstable operating state at high flow rates inside the existing engine.

[0042] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] First, a detailed description of an embodiment of a method for suppressing post-combustion oscillation of a support plate provided by the present application is as follows:

[0044] See also Figure 1 This embodiment provides a method for suppressing post-combustion oscillation of a support plate, comprising:

[0045] Step 101: Based on a pressure sensor device disposed in the engine, pressure data of the flow field inside the engine is collected.

[0046] Step 102: quantify the combustion oscillation state inside the engine based on the pressure data and in combination with the rules of fluid mechanics and thermodynamics.

[0047] It should be noted that, firstly, the pressure data of the flow field inside the engine is collected by using the pressure sensor device pre-installed in the engine, so as to quantify the combustion oscillation state inside the engine based on the collected pressure data and the rules of fluid mechanics and thermodynamics. Among them, the sampling point position of the pressure data can generally be selected from 6 to 8 points on the axis of the injection port within a range of 6 times the length of the support plate downstream of the fuel injection port of the support plate, with an interval of 0.5 to 2 times the length of the support plate.

[0048] Step 103: When the combustion oscillation state of the engine does not meet the preset combustion stability conditions, based on the heat source device arranged behind the engine support plate, combined with the preset heat source intensity configuration information and the heat source control logic, the heat source device is controlled to generate heat, and the changes in the combustion oscillation state of the engine are monitored until the combustion oscillation state of the engine meets the combustion stability conditions.

[0049] The heat source control logic includes the correlation between the heat source intensity and the combustion oscillation state obtained based on the simulation method.

[0050] It should be noted that after step 102, a determination is made based on the combustion oscillation state information obtained. If the combustion oscillation state of the engine does not satisfy the preset combustion stability condition, that is, the combustion oscillation intensity is too high and has exceeded the safety range defined by the combustion stability condition, then the heating intensity of the preset external heat source in the engine is adjusted according to the preset heat source control logic. By adjusting the heating intensity of the heat source device according to the correlation between the external heat source intensity and the combustion oscillation state under the high-speed flow field environment in the heat source control logic, the ignition delay time of the fuel is changed, thereby changing the combustion mode of the area behind the support plate. At the same time, by monitoring the changes in the combustion oscillation state of the engine at regular intervals or in real time, if the combustion oscillation has not weakened or has not reached a level that can satisfy the combustion stability condition, the heating intensity of the heat source device continues to be changed. When the combustion oscillation state of the engine is weakened to a level that can satisfy the combustion stability condition, the regulation of the external heat source can be stopped.

[0051] Among them, the implementation method of monitoring the changes in the combustion oscillation state of the engine can collect data through the aforementioned pressure sensor device, and then quantify the combustion oscillation state based on the collected data, which is similar to steps 101 and 102 and will not be repeated here.

[0052] The technical solution of the present application provides a method for suppressing combustion oscillations after a support plate. By means of a pressure sensor device arranged in the engine, the combustion oscillation state in the engine is monitored according to the collected pressure data. When the combustion oscillation state of the engine does not meet the preset combustion stability conditions, the heating intensity of the heat source is adjusted based on a heat source control logic including a correlation between the intensity of the external heat source and the combustion oscillation state obtained by simulation. By adjusting the heating intensity of the external heat source according to the heat source control logic, the ignition delay time of the fuel is changed, and the combustion mode of the area behind the support plate is changed, thereby achieving the effect of adaptively suppressing combustion oscillations after the support plate. Then, by monitoring the changes in the combustion oscillation state of the engine after the external heat source adjustment, until the combustion oscillation state of the engine is weakened to meet the combustion stability conditions, the stability of the combustion operation state inside the engine in a high flow rate environment is ensured, thereby solving the technical problem of unstable operation state at high flow rates inside the existing engine.

[0053] The above content is a detailed description of a basic embodiment of a support plate post-combustion oscillation suppression method provided by the present application. The following is a detailed description of a further embodiment of a support plate post-combustion oscillation suppression method provided by the present application based on the above embodiment, which is as follows:

[0054] Furthermore, if Figure 2 As shown, regarding the heat source control logic mentioned in step 103, its establishment process includes the following steps:

[0055] Step 1001: construct flow field data of the engine in an unburned state by fluid mechanics simulation according to the equipment structure information of the engine;

[0056] Step 1002: Based on the internal flow field data, a flow field inside the engine in a combustion state is cyclically simulated, and different heat source configuration information is combined during the simulation process to apply a heat source behind the engine support plate through a heat source device to obtain multiple groups of combustion simulation results;

[0057] Step 1003: Determine the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation results and the heat source configuration information, so as to establish the heat source control logic according to the correlation.

[0058] It should be noted that firstly, based on the equipment structure information of the engine, the high-speed flow field data inside the engine in a non-fuel-injected, ie, non-combustion state is constructed by using conventional computational fluid dynamics simulation methods of flow.

[0059] Then, based on the constructed high-speed flow field data and according to the preset fuel injection configuration information, a cyclic simulation is performed on the high-speed flow field inside the engine when the fuel has been injected, that is, in the combustion state. During the simulation process, different heat source configuration information is combined, and heat sources of different intensities are applied in sequence behind the engine support plate to obtain multiple groups of combustion simulation results.

[0060] Finally, based on the multiple sets of combustion simulation results obtained and the heat source configuration information corresponding to these results, the correlation characteristics between the heat source intensity and the combustion oscillation state in the high-speed flow field environment can be extracted, so as to establish the corresponding heat source control logic according to the correlation relationship.

[0061] Among them, each group of combustion simulation results represents a combustion oscillation result simulated based on a heat source configuration information, and a heat source configuration can be simulated multiple times to further improve the extraction quality of correlation relationship features.

[0062] More specifically, the high-speed flow field data mentioned in step 1001 is preferably unsteady flow field data, and the construction process thereof may specifically include:

[0063] According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed through the steady numerical simulation method of fluid mechanics;

[0064] Taking the steady flow field data as the initial field model, the flow field simulation data of a preset time length is calculated through the unsteady numerical simulation method of fluid mechanics; wherein, the preset time length mentioned in this embodiment is generally the time length corresponding to 3 to 5 incoming flow cycles, preferably the time length corresponding to 4 incoming flow cycles. It can be understood that the incoming flow cycle mentioned in this embodiment refers to the time required for the fluid to flow from the inlet to the outlet at the incoming flow velocity.

[0065] Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as the flow field data inside the engine in an unburned state.

[0066] Furthermore, according to the combustion simulation results and the heat source configuration information, the correlation between the heat source intensity and the combustion oscillation state under the flow field environment is determined, specifically including:

[0067] By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

[0068] Furthermore, if Figure 3 As shown, the heat source device mentioned in the above embodiment is arranged behind the support plate, and its arrangement positions are specifically: the upper position behind the support plate and close to the support plate, and the lower position behind the support plate and close to the support plate, wherein the upper position behind the support plate and close to the support plate refers to the position whose flow coordinates extend to the right with the flow coordinates of the tail of the support plate as the starting point, and the normal coordinates extend upward with the normal coordinates of the upper vertex of the tail of the support plate as the starting point, and the lower position behind the support plate and close to the support plate refers to the position whose flow coordinates extend to the right with the flow coordinates of the tail of the support plate as the starting point, and the normal coordinates extend downward with the normal coordinates of the lower vertex of the tail of the support plate as the starting point, and the heat source can be applied by arc discharge.

[0069] The above content is a detailed description of an embodiment of a support plate post-combustion oscillation suppression method provided by the present application. The following is a detailed description of an embodiment of a support plate post-combustion oscillation suppression device provided by the present application, which is as follows:

[0070] See also Figure 4 This embodiment also provides a support plate afterburning oscillation suppression device, including:

[0071] The pressure data acquisition unit 201 is used to acquire the pressure data of the flow field inside the engine based on the pressure sensor device arranged in the engine;

[0072] The combustion oscillation quantification unit 202 is used to quantify the combustion oscillation state inside the engine according to the pressure data and in combination with the rules of fluid mechanics and thermodynamics;

[0073] The heat source intensity control unit 203 is used to control the heating of the heat source device based on the heat source device arranged behind the engine support plate, when the combustion oscillation state of the engine does not meet the preset combustion stability conditions, and monitor the changes in the combustion oscillation state of the engine until the combustion oscillation state of the engine meets the combustion stability conditions, wherein the heat source control logic includes the correlation between the heat source intensity and the combustion oscillation state obtained based on the simulation method.

[0074] Furthermore, it also includes:

[0075] The engine flow field construction unit 2001 is used to construct the flow field data of the engine in the unburned state by means of fluid mechanics simulation according to the equipment structure information of the engine;

[0076] The combustion flow field simulation unit 2002 is used to perform a cyclic simulation of the flow field inside the engine under the combustion state according to the internal flow field data, and in the simulation process, combine different heat source configuration information to apply heat source behind the engine support plate through the heat source device to obtain multiple groups of combustion simulation results;

[0077] The simulation result data processing unit 2003 is used to determine the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation results and the heat source configuration information, so as to establish the heat source control logic according to the correlation.

[0078] Furthermore, the engine flow field construction unit 2001 is specifically used for:

[0079] According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed through the steady numerical simulation method of fluid mechanics;

[0080] Using the steady flow field data as the initial field model, the flow field simulation data of the preset time length is calculated through the unsteady numerical simulation method of fluid mechanics;

[0081] Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as the flow field data inside the engine in an unburned state.

[0082] Furthermore, the simulation result data processing unit 2003 is specifically used for:

[0083] By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

[0084] Furthermore, the heat source device is specifically disposed at the following positions: an upper position behind the support plate and close to the support plate, and a lower position behind the support plate and close to the support plate.

[0085] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0086] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0087] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0088] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0090] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0091] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for suppressing post-combustion oscillation of a support plate, characterized in that: include: Based on a pressure sensor device disposed in the engine, collecting pressure data of the flow field inside the engine; According to the pressure data, the combustion oscillation state inside the engine is quantified in combination with the rules of fluid mechanics and thermodynamics; When the combustion oscillation state of the engine does not meet the preset combustion stability conditions, based on the heat source device arranged behind the engine support plate, combined with the preset heat source intensity configuration information and the heat source control logic, the heat source device is controlled to generate heat, and the changes in the combustion oscillation state of the engine are monitored until the combustion oscillation state of the engine meets the combustion stability conditions, wherein the heat source control logic includes a correlation between the heat source intensity and the combustion oscillation state obtained based on a simulation method.

2. A method for suppressing post-combustion oscillation of a support plate according to claim 1, characterized in that: The heat source control logic is established in the following manner: According to the equipment structure information of the engine, the flow field data inside the engine in an unburned state is constructed by means of fluid mechanics simulation; According to the internal flow field data, a flow field inside the engine in a combustion state is cyclically simulated, and different heat source configuration information is combined during the simulation process to apply a heat source behind the engine support plate through the heat source device to obtain multiple groups of combustion simulation results; According to the combustion simulation result and the heat source configuration information, the correlation between the heat source intensity and the combustion oscillation state under the flow field environment is determined, so as to establish the heat source control logic according to the correlation.

3. A method for suppressing post-combustion oscillation of a support plate according to claim 2, characterized in that: According to the equipment structure information of the engine, the flow field data of the engine in the unburned state is constructed by fluid mechanics simulation, which specifically includes: According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed by means of steady numerical simulation of fluid mechanics; Using the steady flow field data as the initial field model, the flow field simulation data of a preset time length is calculated by an unsteady numerical simulation method of fluid mechanics; Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as flow field data inside the engine in an unburned state.

4. A method for suppressing post-combustion oscillation of a support plate according to claim 2, characterized in that: Determining the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation result and the heat source configuration information specifically includes: By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

5. A method for suppressing post-combustion oscillation of a support plate according to claim 1, characterized in that: The heat source device is specifically disposed at an upper position behind the support plate and close to the support plate and a lower position behind the support plate and close to the support plate.

6. A support plate afterburning oscillation suppression device, characterized in that: include: A pressure data acquisition unit, used for acquiring pressure data of the flow field inside the engine based on a pressure sensor device arranged in the engine; A combustion oscillation quantification unit, used to quantify the combustion oscillation state inside the engine according to the pressure data in combination with fluid mechanics and thermodynamics rules; A heat source intensity control unit is used to control the heat source device to generate heat based on the heat source device arranged behind the engine support plate, when the combustion oscillation state of the engine does not meet the preset combustion stability condition, and monitor the changes in the combustion oscillation state of the engine, in combination with preset heat source intensity configuration information and heat source control logic, until the combustion oscillation state of the engine meets the combustion stability condition, wherein the heat source control logic includes a correlation between the heat source intensity and the combustion oscillation state obtained based on a simulation method.

7. A support plate afterburning oscillation suppression device according to claim 6, characterized in that: Also includes: An engine flow field construction unit, used to construct flow field data inside the engine in an unburned state by means of fluid mechanics simulation according to the equipment structure information of the engine; A combustion flow field simulation unit, for cyclically simulating the flow field inside the engine in a combustion state according to the internal flow field data, and combining different heat source configuration information during the simulation process, applying a heat source behind the engine support plate through the heat source device, so as to obtain multiple groups of combustion simulation results; The simulation result data processing unit is used to determine the correlation between the heat source intensity and the combustion oscillation state under the flow field environment according to the combustion simulation result and the heat source configuration information, so as to establish the heat source control logic according to the correlation.

8. A support plate afterburning oscillation suppression device according to claim 7, characterized in that: The engine flow field construction unit is specifically used for: According to the equipment structure information of the engine, the steady flow field data of the engine in the unburned state is constructed by means of steady numerical simulation of fluid mechanics; Using the steady flow field data as the initial field model, the flow field simulation data of a preset time length is calculated by an unsteady numerical simulation method of fluid mechanics; Unsteady flow field data are constructed based on the flow field simulation data, and the unsteady flow field data are used as flow field data inside the engine in an unburned state.

9. A support plate afterburning oscillation suppression device according to claim 7, characterized in that: The simulation result data processing unit is specifically used for: By comparing different combustion simulation results, the influence result data of different heat source intensities on the combustion oscillation state are determined according to the comparison results, so as to determine the correlation between the heat source intensity and the combustion oscillation state according to the influence result data.

10. A support plate afterburning oscillation suppression device according to claim 6, characterized in that: The heat source device is specifically disposed at an upper position behind the support plate and close to the support plate and a lower position behind the support plate and close to the support plate.

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